Any computer enthusiasts would know the importance of keeping the components inside of a system running cool. This is especially true if you overclock because once pushing the hardware components to their limits, the resultant heat they generate can cause system instability and in some extreme situations ruin the hardware. Anyone who messes around with their system will know how crappy the retail processor heatsink is in keeping the temperature of the CPU running low. The retail Intel heatsink is extremely inefficient in the heat conducting department despite the fact it is running at extremely quiet. Thus, for those who overclock their system, having an after-market heatsink and fan is pretty much a given in order to achieve that perfect overclocking result.